连接Java - MySQL:不允许公钥检索

我尝试使用连接器8.0.11连接MySQL数据库与Java。一切似乎都很好，但我得到这个异常:

Exception in thread "main" java.sql.SQLNonTransientConnectionException: Public Key Retrieval is not allowed at
     com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:108) at 
     com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:95) at
     com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:122) at     
     com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:862) at 
     com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:444) at
     com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:230) at
     com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:226) at
     com.mysql.cj.jdbc.MysqlDataSource.getConnection(MysqlDataSource.java:438) at
     com.mysql.cj.jdbc.MysqlDataSource.getConnection(MysqlDataSource.java:146) at
     com.mysql.cj.jdbc.MysqlDataSource.getConnection(MysqlDataSource.java:119) at
     ConnectionManager.getConnection(ConnectionManager.java:28) at
     Main.main(Main.java:8)

下面是我的Connection Manager类:

public class ConnectionManager {

    public static final String serverTimeZone = "UTC";
    public static final String serverName = "localhost";
    public static final String databaseName ="biblioteka";
    public static final int portNumber = 3306;
    public static final String user = "anyroot";
    public static final String password = "anyroot";
    
    public static Connection getConnection() throws SQLException {
    
        MysqlDataSource dataSource = new MysqlDataSource();
    
        dataSource.setUseSSL( false );
        dataSource.setServerTimezone( serverTimeZone );
        dataSource.setServerName( serverName );
        dataSource.setDatabaseName( databaseName );
        dataSource.setPortNumber( portNumber );
        dataSource.setUser( user );
        dataSource.setPassword( password );
        
        return dataSource.getConnection();
    }
}

当前回答

在MySQL 8.0中，默认的身份验证插件由mysql_native_password更改为caching_sha2_password。有关此更改的更多信息，请参阅https://dev.mysql.com/doc/refman/8.0/en/upgrading-from-previous-series.html#upgrade-caching-sha2-password。

这意味着为了使用caching_sha2_password，连接必须执行以下操作之一:

使用安全连接(useSSL=true) 使用未加密的连接，支持使用RSA密钥对交换密码(useSSL=false和其他配置参数-见https://dev.mysql.com/doc/refman/8.0/en/caching-sha2-pluggable-authentication.html)

你有几个选择:

ALTER the users to use the mysql_native_password plugin (like how it was doing historically and will also work with older clients / connections which don't support caching_sha2_password) useSSL=true useSSL=false and configure public key retrieval (this doesn't mean using allowPublicKeyRetrieval=true which would avoid the error - but defeats the objective of this extra security and is slow - it does mean using something like server-public-key-path to point to the client side copy of the public key)

2021-11-09 01:27:11

其他回答

作为建议的答案，您可以尝试使用mysql_native_password身份验证插件而不是caching_sha2_password身份验证插件。

ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY 'your_password_here';

2018-11-14 12:37:50

我在spring引导框架上使用下面的配置解决了这个问题

spring.datasource.url=jdbc:mysql://localhost:3306/db-name?useUnicode=true&characterEncoding=UTF-8&allowPublicKeyRetrieval=true&useSSL=false
spring.datasource.username=root
spring.datasource.password=root

2018-08-26 15:39:54

当我遇到根帐户“不允许公开密钥检索”的问题时，我更新了这个参数。

2022-02-16 09:15:20

给出连接URL jdbc: mysql: / / localhost: 3306 / hb_student_tracker吗?allowPublicKeyRetrieval = true&useSSL = false&serverTimezone = UTC

2019-05-15 05:13:02

将服务器时区设置为本地位置，修复了这个问题。

2021-05-03 10:59:01

连接Java - MySQL:不允许公钥检索

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